ARCTIADH AND NOCTUIDA FROM FORMOSA. 163 
a black cloud in lower part; beyond the reniform the veins are 
marked with black and there are black streaks between the veins 
before termen; fringes black between the veins, pale brown at ends 
of the veins. Hind wings white-brown powdered with darker, vena- 
tion and discoidal spot black ; fringes brown, paler tips. Under side 
pale brown clouded with blackish on dise of fore wings; a black 
discoidal spot and an indistinct postmedial line (dotted with black 
on veins) on hind wings. 
Expanse, 40 millim. 
Collection number, 1757. 
One male specimen from Rantaizan, May, 1909. 
Stretchia acronyctoides, sp. n. 
3. Head grey, palpi brown, antenne serrate; thorax grey, 
streaked with grey on the sides; abdomen brown. Fore wings grey 
clouded and suffused with brownish, and powdered with whitish 
especially on the dorsal area; transverse markings not distinct, but 
there are traces of a blackish, serrated, postmedial line ; a short black 
streak from the base under median nervure, another, in line with it, 
extends to the termen; a black linear mark on middle of dorsum, and 
black dashes between the veins on terminal area, those between veins 
4 and 6 most in evidence; orbicular and reniform stigmata united, 
edged above with black; some black dots on the costa above the 
stigmata. Hind wings brownish grey, discoidal dot black. Under 
side brownish, black discoidal dot on all wings. 
?. Similar to the male but larger. 
Expanse, ¢ 38 millim., 9? 41 millim. 
Collection number, 1682. 
A male specimen from Arizan, May, 1908, and a female from 
Rantaizan, May, 1909. 
Allied to Stretchia saxea, Leech. 
Hriopyga conspecta, sp. n. 
g. Head and front of thorax brownish grey, rest of thorax 
whitish with faint brown tinge; palpi dark brown, third joint paler ; 
abdomen brownish grey, hind segments darker, anal tuft yellowish. 
Fore wings white transversely clouded with grey on the outer half; 
a reddish brown mark on costa towards base, and another, also on 
the costa, just beyond the middle; the first mark broadly margined 
with black on its inner and lower edges, and, except on costa, 
narrowly on its inner edge; the second mark has a small black spot 
on each side of it on the costa, one on its inner edge, and a large one 
below the lower outer edge of which is produced; a black mark on 
the costa before apex with a few reddish brown scales before it, and 
a row of black dots on the termen, the latter placed between the veins. 
Hind wings blackish with traces of darker discoidal mark and trans- 
verse line. Fringes of all the wings white. Under side whitish 
tinged with brown on the fore wings and on costal area of the hind 
wings ; a cluster of blackish clouds beyond middle of the fore wings ; 
the hind wings have black discoidal spot and postinedial line, and the 
costal area is freckled with black. 
Expanse, 30 millim, 0 2 
